Hamline q



(No Model.)

' H. PRENUH. ROOF FOR VAULTS.

N o.24 4,224. Patnted July 12,1881.

INVBNTOR WITNESSES:

I A i I I BY.

v mnmrs.

UNITED STATES PATENT OFFICE.

HAMLINE Q. FRENCH, OF NEW YORK, N. Y.

ROOF FOR VAULTS.

SPECIFICATION'forming part of Letters Patent No. 244,224, dated July 12, 1881.

Application filed June 1, 1881. (No model.)

To all whom it may concern:

Be it known that I, HAMLINE Q. FRENCH,

of the city, county, and State of New York, have invented a new and useful Improvement in Roofs for Vaults, of which the following is a specification.

' My improvements relate to the construction of roofs for vaults, mausoleums, and structures of similar character built of stone and intended for burialpurposes and the object of my invention is to obtain a building without vertical joints, and one held together and locked at the roof, so that by the locking and the weight of the roof the structure shall be made as enduring as the material of which it is built.

My improved roof consists of the front and rear gable-stones, the roof-stones, which are continuous from one gable-stone to the other at each side, and held to the gable-stones by mortise and tenon or equivalent connections, and the cap-stone, which is formed with a rabbetto lap upon the roof-stones and rests upon the gables, by which construction the stones forming the complete roof are securely locked, and without possibility of dislocation without being raised bodily upward.

My invention is shown in the accompanying drawings, forming part of this specification, wherein Figure l is a front elevation, partially in section, of a vault constructed in accordance with myinvention. Fig.2 is a plan view of the same, with the cap-stone partially removed:

Similar letters of reference indicate corresponding parts.

The side walls, a a, of the vault are laid up in the usual manner.

AA are the gable-stones, B B the roof-stones, and O the cap-stone.

The gables A are each a single stone of any required shape and size, and of a length sufficient to connect the roof -stones. They are formed upon each of their upper surfaces with tenons b.

The roof-stones B are also each of a single piece in length or continuous from one gablestone to the other. These are formed with mortises for receiving the tenons.

The cap-stone G is a single piece, and of a length to rest upon the gable-stones A at its ends. It is formed to lap at each side upon the stones B, on the whole or any portion of its length. The stone 0 is to be lowered to place after the stones B are set, and, as will be seen, completes the roof and locks the parts together. This stone 0 is in practice of great weight, which weight tends entirely to hold the structure together, and there being no vertical joints to spread open there can be no disruption or displacement by ordinary means.

The space at the sides, between the stones A, is filled out by stones 0 set upon the side walls.

The root at each side of the cap-stone is to be formed of one or more roof-stones B, each being continuous from one gable-stone to the other, and locked, as described. The roofmay also be made fiat, curved, or inclined.

In place of using the mortises and tenons shown, dowel-pins or other equivalent devices can be used for locking the roof-stones. I do not limit myself in that respect.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A roof for vaults and similar structures, consisting of the continuous roof-stones B B, gable-stones A, connecting and locked to the roof-stones, and the cap-stone O, lapping upon the roof-stones, substantially as shown and described.

2. In roofs for vaults and similar structures, the combination of continuous roof-stones B B and gable-stones A A, connected and locked by mortises and tenons, or equivalent devices, substantially as shown and described.

HAMLINE Q. FRENCH.

Witnesses:

GEO. D. WALKER, O. SEDGWIOK. 

